Page 361 - CITS - Computer Software Application -TT

COMPUTER SOFTWARE APPLICATION - CITS

File: TestInheritance.java

class Animal{
void eat(){System.out.println(“eating...”);}
}
class Dog extends Animal{
void bark(){System.out.println(“barking...”);}
}

class TestInheritance{
public static void main(String args[]){
Dog d=new Dog();
d.bark();

d.eat();
}}
Output:
barking...
eating...

Multilevel Inheritance Example
When there is a chain of inheritance, it is known as multilevel inheritance. As you can see in the example given
below, BabyDog class inherits the Dog class which again inherits the Animal class, so there is a multilevel
inheritance.
File: TestInheritance2.java
class Animal{
void eat(){System.out.println(“eating...”);}

}
class Dog extends Animal{
void bark(){System.out.println(“barking...”);}
}

class BabyDog extends Dog{
void weep(){System.out.println(“weeping...”);}
}
class TestInheritance2{
public static void main(String args[]){
BabyDog d=new BabyDog();
d.weep();
d.bark();
d.eat();
}}
Output:
weeping...

barking...
eating...

348

CITS : IT&ITES - Computer Software Application - Lesson 94 - 100